{
    "count": 8,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 4851,
            "url": "https://svs.gsfc.nasa.gov/4851/",
            "result_type": "Visualization",
            "release_date": "2020-09-09T13:15:00-04:00",
            "title": "Deep Star Maps 2020",
            "description": "The star map in celestial coordinates, at five different resolutions. The map is centered at 0h right ascension, and r.a. increases to the left. || starmap_2020_4k_print.jpg (1024x512) [41.8 KB] || starmap_2020_4k_searchweb.png (320x180) [53.9 KB] || starmap_2020_4k_thm.png (80x40) [5.5 KB] || starmap_2020_4k.exr (4096x2048) [34.3 MB] || starmap_2020_8k.exr (8192x4096) [124.5 MB] || starmap_2020_16k.exr (16384x8192) [422.9 MB] || starmap_2020_32k.exr (32768x16384) [1.4 GB] || starmap_2020_64k.exr (65536x32768) [3.8 GB] || ",
            "hits": 3575
        },
        {
            "id": 4856,
            "url": "https://svs.gsfc.nasa.gov/4856/",
            "result_type": "Visualization",
            "release_date": "2020-09-09T13:00:00-04:00",
            "title": "An Elsewhere Starfield",
            "description": "The randomized star map in celestial coordinates, at five different resolutions. (Or more generically: The galactic plane is tilted 63° in the coordinate frame of the image.) || starmap_random_2020_4k_print.jpg (1024x512) [37.1 KB] || starmap_random_2020_4k_searchweb.png (320x180) [67.0 KB] || starmap_random_2020_4k_thm.png (80x40) [4.3 KB] || starmap_random_2020_4k.exr (4096x2048) [34.1 MB] || starmap_random_2020_8k.exr (8192x4096) [123.8 MB] || starmap_random_2020_16k.exr (16384x8192) [423.3 MB] || starmap_random_2020_32k.exr (32768x16384) [1.4 GB] || starmap_random_2020_64k.exr (65536x32768) [3.8 GB] || ",
            "hits": 525
        },
        {
            "id": 4451,
            "url": "https://svs.gsfc.nasa.gov/4451/",
            "result_type": "Visualization",
            "release_date": "2017-08-01T00:00:00-04:00",
            "title": "The Alternative Night Sky - Another Time - Another Place",
            "description": "A low-magnitude threshold version of the skymap. The threshold magnitude is 3.0 so the galactic disk is very faint.  Good for when you just want the brighter stars and have a wide field of view. || RandomizedSkymap.t3_04096x02048_print.jpg (1024x512) [157.4 KB] || RandomizedSkymap.t3_04096x02048_searchweb.png (320x180) [78.0 KB] || RandomizedSkymap.t3_04096x02048_thm.png (80x40) [4.1 KB] || RandomizedSkymap.t3_04096x02048.tif (4096x2048) [24.0 MB] || RandomizedSkymap.t3_08192x04096.tif (8192x4096) [96.0 MB] || ",
            "hits": 226
        },
        {
            "id": 3895,
            "url": "https://svs.gsfc.nasa.gov/3895/",
            "result_type": "Visualization",
            "release_date": "2012-01-17T00:00:00-05:00",
            "title": "Deep Star Maps",
            "description": "This set of star maps was created by plotting the position, brightness, and color of just over 100 million stars from the Bright Star, Tycho-2, and UCAC3 star catalogs. The constellation boundaries are those established by the International Astronomical Union in 1930. The constellation figures also come from the IAU, although they're not official.The maps are presented in plate carrée projections using either celestial (J2000 geocentric right ascension and declination) or galactic coordinates. They are designed for spherical mapping in animation software. The oval shapes near the top and bottom of the star maps are not galaxies. The distortion of the stars in those parts of the map is just an effect of the projection.The celestial coordinate mapping will be the more useful one for animation, since camera rotations in the software will correspond in a straightforward way to the right ascension and declination in astronomy references. The galactic coordinate mapping works as a standalone image showing the edge-on view of our home galaxy, from the inside.The animation demonstrates the use of the maps in a tour of the sky. The tour starts at W-shaped Cassiopeia, then heads south through Perseus to the winter constellation of Orion the Hunter and the Hyades and Pleiades star clusters in Taurus. It moves southeast past Orion's canine companion and its star, Sirius, brightest in the sky, eventually pausing at the rich southern hemisphere portion of the Milky Way in Carina and Crux, the Southern Cross.East of the Cross, in Centaurus, is the binary star Alpha Centauri, at 4.4 light-years the naked-eye star system nearest to the Sun. Also visible as a fuzzy spot near the top of the frame is the globular cluster Omega Centauri. The number of stars used to draw the star maps is large enough to reveal many globular and open star clusters as well as the Large and Small Magellanic Clouds.After passing near the celestial south pole, the tour moves north along the Milky Way to the center of our galaxy near the teapot in Sagittarius. The tour veers northwest from there, finally stopping at the familiar Big Dipper or Plough asterism in Ursa Major.This is an update to entry 3572. || ",
            "hits": 1150
        },
        {
            "id": 3635,
            "url": "https://svs.gsfc.nasa.gov/3635/",
            "result_type": "Visualization",
            "release_date": "2009-10-15T12:00:00-04:00",
            "title": "IBEX First Skymap Release",
            "description": "The Interstellar Boundary Explorer (IBEX) mission science team has used data from NASA's IBEX spacecraft to construct the first-ever all-sky map of the interactions occurring at the edge of the solar system, where the sun's influence diminishes and interacts with the interstellar medium. The interstellar boundary region shields our solar system from most of the dangerous galactic cosmic radiation that would otherwise enter from interstellar space.This visualization illustrates the IBEX satellite in Earth orbit (the orbit reaching almost as far as the orbit of the Moon) and pulls out to beyond the heliopause boundary (the true 3-D nature of the boundary is reduced to a 2-D spherical surface). The sphere with the skymap opens to reproject the data into a near-Aitoff type map projection.The skymap shows the measured flux of energetic neutral atoms (ENAs). || ",
            "hits": 44
        },
        {
            "id": 3572,
            "url": "https://svs.gsfc.nasa.gov/3572/",
            "result_type": "Visualization",
            "release_date": "2009-01-26T00:00:00-05:00",
            "title": "The Tycho Catalog Skymap - Version 2.0",
            "description": "This image set is a skymap of stars from the Tycho and Hipparcos star catalogs, provided by the ESO/ECF generic catalog server. The maps are plotted in plate carrée projection (Cylindrical-Equidistant) using celestial coordinates making them suitable for mapping onto spheres in many popular animation programs. The stars are plotted as gaussian point-spread functions (PSF) so the size and amplitude of the stars corresponds to their relative intensity. The stars are also elongated in Right Ascension (celestial longitude) based on declination (celestial latitude) so stars in the polar regions will still be round when projected on a sphere. Stars fainter than the threshold magnitude, usually selected as 5th magnitude, have their magnitude-intensity curve adjusted so they appear brighter than they really are. This makes the band of the Milky Way more visible. Stellar colors are assigned based on B and V magnitudes (B and V are stellar magnitudes measured through different filters). If Johnson B and V magnitudes are unavailable, Tycho B and V magnitudes are used instead. From these, an effective stellar temperature is derived using the algorithms described in Flower (ApJ 469, 355 1996). Corrections were noted from Siobahn Morgan (UNI). The effective temperature was then converted to CIE tristimulus X,Y,Z triples assuming a black-body emission distribution. The X,Y,Z values are then converted to red-green-blue color pixels. About 2.4 million stars are plotted, but many may be below the pixel intensity resolution. The three most conspicuously missing objects on these maps are the Andromeda galaxy (M31) and the two Magellanic Clouds. Changes from the first version #3442, The Tycho Catalog Skymap: The star generation algorithm now favors use of the Johnson magnitudes when available. This improves the star colors over the previous method. The star intensity profiles are also slightly modified to make the cores brighter with a faster intensity falloff. We have also set the color standard to SMPTE with a gamma of 1.8.Update: This skymap has been revised.  The newer version is available at Deep Star Maps. || ",
            "hits": 233
        },
        {
            "id": 3439,
            "url": "https://svs.gsfc.nasa.gov/3439/",
            "result_type": "Visualization",
            "release_date": "2007-09-13T00:00:00-04:00",
            "title": "Simulations of the Gamma-Ray Sky",
            "description": "The Gamma-Ray Large Area Space Telescope (GLAST) will observe the sky in gamma-rays with energies between 10 million electron volts (MeV) to 300 billion electron volts (GeV) (a photon of visible light is roughly 2 electron volts). At these energies, the detectors will receive roughly 2 photons every second. At these energies, the objects visible will be active galaxies, quasars, pulsars, and gamma-ray bursts. This visualization is generated from one year of simulated photon event-lists using known sources. These event lists are used for testing the various data analysis software being developed for the project. Due to the extremely low event rate, it takes about one week of event accumulation to see structure in the sky. To generate the 600+ frames of this visualization, the event lists were box-car averaged for a duration of one week for each frame, and each frame shifted 50,000 seconds in time from the previous frame. The low angular resolution of gamma-ray detectors makes point sources appear spread out in the sky. In these maps, the color of each pixel represents the number of photons accumulated in that pixel (over an energy range of 10MeV-300GeV). Horizontally, across the center of the map, is the diffuse emission from the plane of our own Milky Way galaxy. The images are projected in galactic coordinates with a plate carrée projection so there is significant distortion with increasing latitude above the galactic disk. This emission in the galactic plane is created by pulsars and supernova remnants. Located away from this plane is emission from active galaxies and high-velocity pulsars. Occasionally, a bright spot appears which can be a gamma-ray burst or quasar in an active state. || ",
            "hits": 53
        },
        {
            "id": 3442,
            "url": "https://svs.gsfc.nasa.gov/3442/",
            "result_type": "Visualization",
            "release_date": "2007-08-20T00:00:00-04:00",
            "title": "The Tycho Catalog Skymap",
            "description": "This image set is a skymap of stars from the Tycho and Hipparcos star catalogs. The maps are plotted in plate carrée projection (Cylindrical-Equidistant) using celestial coordinates making them suitable for mapping onto spheres in many popular animation programs. The stars are plotted as gaussian point-spread functions (PSF) so the size and amplitude of the stars corresponds to their relative intensity. The stars are also elongated in Right Ascension (celestial longitude) based on declination (celestial latitude) so stars in the polar regions will still be round when projected on a sphere. Stars fainter than the threshold magnitude, usually selected as 5th magnitude, have their magnitude-intensity curve adjusted so they appear brighter than they really are. This makes the band of the Milky Way more visible. Stellar colors are assigned based on B and V magnitudes (B and V are stellar magnitudes measured through different filters). If Tycho B and V magnitudes are unavailable, Johnson B and V magnitudes are used instead. From these, an effective stellar temperature is derived using the algorithms described in Flower (ApJ 469, 355 1996). Corrections were noted from Siobahn Morgan (UNI). The effective temperature was then converted to CIE tristimulus X,Y,Z triples assuming a black-body emission distribution. The X,Y,Z values are then converted to red-green-blue color pixels. About 2.4 million stars are plotted, but many may be below the pixel intensity resolution. The three most conspicuously missing objects on these maps are the Andromeda galaxy (M31) and the two Magellanic Clouds. [The images in this visualization were updated August 28, 2007 to fix a bug in the star generation algorithm.]This skymap has been superseded by #3572, The Tycho Catalog Skymap - Version 2.0. || ",
            "hits": 128
        }
    ]
}